Which laser is primarily used for tattoo removal on dark ink?

The 1064 nm wavelength laser is primarily used for tattoo removal, especially effective on dark ink colors such as black and blue. This effectiveness derives from the laser's ability to penetrate deeper layers of the skin without causing significant thermal damage to the surrounding tissue. The longer wavelength of the 1064 laser allows for better absorption by black ink, which is why it is often referred to as the gold standard for tattoo removal.

Additionally, the 1064 laser is capable of treating a wide variety of skin types, making it versatile for different individuals. Its output can also be adjusted for specific ink colors or skin types, providing customized treatment options that enhance effectiveness and safety.

In contrast, the other options, while useful in specific contexts, are not as effective for dark inks as the 1064 nm laser. The 532 nm laser is optimal for lighter inks such as red or orange, the Ruby laser at 694 nm is effective for certain colors as well but has limitations on darker inks, and the Alexandrite laser at 755 nm is better suited for tattoo colors like green and some shades of blue, rather than primarily for dark ink removal.